package com.example.lotterysystem.common.utils;

import com.fasterxml.jackson.core.JacksonException;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.boot.json.JsonParseException;

import java.util.List;
import java.util.concurrent.Callable;

/**
 * */
public class JacksonUtil {
    private JacksonUtil() {}
    private  final static ObjectMapper OBJECT_MAPPER;

    static {
        OBJECT_MAPPER = new ObjectMapper();
    }
    private static ObjectMapper getObjectMapper()
    {
        return OBJECT_MAPPER;
    }


    private static  <T> T tryParse(Callable<T> parser) {
        return tryParse(parser, JacksonException.class);
    }

    //
    private static  <T> T tryParse(Callable<T> parser, Class<? extends Exception> check) {
        try {
            return parser.call();
        } catch (Exception var4) {
            if (check.isAssignableFrom(var4.getClass())) {
                throw new JsonParseException(var4);
            }
                throw new IllegalStateException(var4);
        }
    }

    //序列化
    /**
     *
     * @param object
     * @return
     */

    public static String writeValueAsString(Object object)
    {
        return JacksonUtil.tryParse(()->
        {
            return JacksonUtil.getObjectMapper().writeValueAsString(object);
        });
    }

    //反序列化
    /**
     *  @param content
     * @param valueType
     * @return
     * @param <T>
    * */
    public static <T> T readValue(String content,Class<T> valueType)
    {
        return JacksonUtil.tryParse(()->{
           return JacksonUtil.getObjectMapper().readValue(content,valueType);
        });
    }


    public static <T> T readListValue(String content,Class<?> paramClasses)
    {
        JavaType javaType = JacksonUtil.getObjectMapper().getTypeFactory().constructParametricType(List.class, paramClasses);
        return JacksonUtil.tryParse(()->{
            return JacksonUtil.getObjectMapper().readValue(content,javaType);
        });
    }


}

